IntroductionAdvanced practice roles are well documented, and continue to respond to the changing landscape in radiotherapy and oncology. In the UK the highest level of AP for the therapeutic radiographer/radiation therapist (RTT) is the consultant radiographer. These posts should meet the four domains of practice, as set out in national guidance. Here we aim to describe well established roles that meet this criteria, and provide subgroups of examples.MethodologyThree AP post holders with over 10 years AP experience completed a questionnaire adapted from the consultant radiographer toolkit. These were completed in conjunction with guidance and framework documents. The examples were to demonstrate how they achieve a high level of practice in clinical and expert practice; professional leadership and consultancy; education, training and development; and practice and service development, research and evaluation. Participants then categorised results to add subgroups to each domain.ResultsThe questionnaire was completed by three RTTs specialising as a lung consultant radiographer (LCR), a neuro-oncology consultant radiographer (NCR) and a lead research radiographer (RR). Each post holder described how they meet the criteria by discussing the benefit they make to their profession, department and patients. All posts had examples for all criteria, achieving consultant practice. Clinical and expert practice was the dominant domain for the clinical specialist posts, and professional leadership and research evaluation was the strongest domains for the RR.ConclusionAll three consultant RTTs have demonstrated expert practice with clear and transparent examples of their professional practice which evidence the four domains of consultant practice. Following two decades of AP practice for RTTs there is a need to be strategic in the development of future posts with a prospective view on succession planning that safeguards their longevity.